H. Sph. acosines, a using polar dist. (90Adadec.) ... =included angle between arcs showing polar distances. Ans. 20Ad 55a#39; ... Ans. 30 ft. 40. When the suna#39;s dec. was 20Ad N. he set 3 hours later than when it was 20Ad S. Find the lat, and times of setting.
Title | : | A Manual of Trigonometry |
Author | : | Richard C. Buck |
Publisher | : | - 1901 |
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